Photo by: Brian Blanco
NFL football cornerback Darrelle Revis holds up a Tampa Bay Buccaneers jersey after addressing the media announcing that he and the Buccaneers have agreed on a six-year contract during a press conference Monday, April, 22, 2013, in Tampa, Fla. The Buccaneers acquired Revis from the New York Jets in exchange for their first-round pick in the 2013 NFL Draft and a conditional selection in the 2014 NFL Draft. (AP Photo/Brian Blanco)

Robert Mueller’s special counsel investigation into Russian meddling in the 2016 election has cost $6.7 million during the first four and a half months of the probe. Click to see past independent counsel investigations guilty of racking up high bills.